Horseshoe.



No. 682,506. Patented Sept. I0, I908.

. 0. SWANSTRDM.

HORSESHOE (Application filed Mar 11, 1901.;

(No Model.)

UNITED STATES l JFl CEt PATENT HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 682,506, datedSeptember 10, 1901.

Application filed March 11, 1901. Serial No. 50,673. (No model.)

To aZZ whom it may concern.

Be it known that I, OTTO Swnnsrnoma citizen of the United States,residing at Frazee, in the county of Becker and State of Minnesota, haveinvented certain new and useful Improvements in Horseshoes; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

The invention relates to horseshoes.

The object of the invention is to provide a removable calk for ahorseshoe which may be readily adjusted to position and which will besecurely retained without the employment of foreign fastening means orwithout screwthreading, fastening means being obj ectionable for thereason of the expense attached thereto and screw-threading beingobjectionable for the reason that when the calks are tightened it isdifficult to get their edges or working faces into the proper position.

A further object of the invention is to slant the toe-calks, so that theanimal will obtain a firmer hold upon the ice than if the said calkswere perfectly straight vertically.

With these and other objects in View the invention consists of certainnovel features of construction, combination, and arrangement of parts,which will be hereinafter more fully described, and particularly pointedout in the appended claim.

In the accompanying drawings, Figure 1 is a side elevation of myimproved horseshoe. Fig. 2is a bottom plan view, and Fig. 3 is avertical sectional view through the toe of the shoe and one of thetoe-calks.

In the drawings, 1 denotes a horseshoe, which may be of any well knownor approved construction, provided with openings which are made inclinedand tapering from the base upward to form sockets 2.

3 denotes the heel-calks, and 4t denotes-the toe-calks. Each of thesecalks has a long straight sharp lower end or working edge, so that itwill make a deep chisel-like out in the ice and will always give thenecessary amount of surface to hold, whether the ice is hard or soft.The edge is not limited to any certain size, but it is preferred for theabove reason to make it chisel-shaped. The toe-calks slant forwardly orare inclined from rear to front,

as shown, which enables the animal to get a better hold on the ice, forit is well known that in pulling the animal raises his heels up andpulls only with the toe. By inclining the calks from rear to front itwill be i mpos sible for the calks to slip, whereas if a calk with avertical front wall is used under the same conditions that is, when theanimal begins to pull with his toe-the said calk will slant so farrearwardly as to cause it to slip. These calks are secured in theinclined tapering sockets 2 of the shoe in the follow ing manner: I makethe shank CL of the calk inclined and tapering, so as to correspondexactly with the inclined tapering socket-seat 2. At the union of thecalk and its shank I form a surrounding projecting ring b, (shown inFig. 3,) which serves when the shank is inserted in the socket to wedgethe same therein by means of using a suitable imple ment, such as ahammer or the like, to strike the shoulder, thus driving the shank intothe socket, whereby it is held without the aid of an intermediatefastening device, as the Wedging action between socket and shank servesto keep the calk in its seat or socket by the coacting frictionalengagement of said shanks and sockets. Furthermore, by means of theannular shoulder b, if occasion requiresit, the shank can be driven intothe socket by means hereinbefore stated, the shank a of the calk,tapering in form, corre sponding to the tapering of the calk sockets orapertures in the shoe. By this construction the weight of the animalupon the shoe serves to force the calk home in its socket or seat. Thecalks may be readily adjusted axially by means of the annular shoulder,so as to bring'all their working faces parallel, a difficult thing to doif the shanks were screw-threaded, for the reason that if screwthreadedsome calks when screwed home as far as possible would have their workingedges or ends at an angle to the working edges or ends of other calks.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, mode of operation, andadvantages of Inyinvention will be readily un derstood without requiringa more extended explanation.

Various changes in the form, proportion,

and details of construction may be made within the scope of theinvention without departing from the spirit or sacrificing any of theadvantages of the same.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

As an improved article of manufacture, a horseshoe having inclinedsocket-seats therein, tapering from the base upward, the calks havingfront and rear inclined face portions, and chisel-shaped terminal lowerportions, the calks provided with shanks having inclined and taperingportions to correspond to the shapes of the socket-seats of the shoe, :5and the surrounding projecting rings formed at the union of the calksand shanks whereby frictional engagement of the shanks with the socket-seats of said shoe is accomplished, substantially in the mannerdescribed.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

OTTO S WANSTROM.

